A lot of important people in this club seem to think otherwise. The fact he is back speaks volumes. BonBon might be a not very eloquent speaker or a good tactician, but he strikes me as a direct guy. Can never have too many of those.
Ask yourself what is better for Kean, mind you Juventus:
1. He takes the other route and wins everyone by his performance as a player. Even racists on the stadium sometimes tend to be football fans. Kean gets mentally tougher in the process and takes such 'offenses' as coming from people below him in the future. Which they are.
2. Makes a bigger deal of it, like most SJWs nowdays. The world is over, WAR on racism, etc... Turns into a Balotelli and by the end of his career we don't know what he was all about, except not being the player he could have been.
Winning is the way.